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Wisconsin

$79+ Cheap flights from Ontario (ONT) to Wisconsin

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/9. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — MKE
oct. 17 — oct. 241
vie. 10/17
vie. 10/24
1 adult, Economy
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Cheap flight deals from Ontario to Wisconsin

Keep the following information in mind while searching for Ontario to Wisconsin flight deals. Data was last updated septiembre 17, 2025.

Round-trip from

$143
(Gotogate)

One-way from

$79
(Cheapflightsfares)

Popular in

December

Cheapest in

August

Average price

$350
From Ontario to Wisconsin
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One-way flight from Ontario to Wisconsin
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Highest demand for flights based on searches. 14% potential increase in price ($63 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Ontario to Wisconsin

Cheapest flights from Ontario to Wisconsin
Explore the most affordable flight options available from Ontario to Wisconsin. Find the lowest fares from popular airlines and budget airlines, with prices last updated on septiembre 17, 2025.

This Gotogate deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/298:59 pmONT - MSP
1 stop21h 47mFrontier
mié. 10/87:50 amMSP - ONT
1 stop18h 00mFrontier
Deal found 9/15$143
This Booking.com deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/2310:30 amONT - MSP
1 stop11h 23mFrontier
mié. 10/297:50 amMSP - ONT
1 stop18h 00mFrontier
Deal found 9/16$144
This Priceline deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/136:53 amONT - MKE
1 stop10h 25mFrontier
vie. 10/178:04 pmMKE - ONT
1 stop5h 46mFrontier
Deal found 9/16$147
This Mytrip deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/96:53 amONT - MSP
1 stop15h 00mFrontier
jue. 10/169:49 pmMSP - ONT
1 stop12h 00mFrontier
Deal found 9/16$148
This Booking.com deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/96:53 amONT - MSP
1 stop15h 00mFrontier
dom. 10/129:49 pmMSP - ONT
1 stop12h 00mFrontier
Deal found 9/15$149
This Frontier deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/2310:30 amONT - MSP
1 stop11h 23mFrontier
dom. 10/266:00 amMSP - ONT
1 stop5h 35mFrontier
Deal found 9/16$152
This Frontier deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/1011:53 amONT - MSP
1 stop10h 00mFrontier
dom. 10/196:00 amMSP - ONT
1 stop5h 35mFrontier
Deal found 9/15$153
This Frontier deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/98:34 amONT - MSP
1 stop10h 20mFrontier
vie. 10/176:00 amMSP - ONT
1 stop5h 35mFrontier
Deal found 9/15$158
This Flightnetwork deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/136:53 amONT - MSP
1 stop15h 00mFrontier
jue. 10/169:49 pmMSP - ONT
1 stop12h 00mFrontier
Deal found 9/16$160
This Frontier deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 10/118:34 amONT - MSP
1 stop6h 41mFrontier
dom. 10/129:49 pmMSP - ONT
1 stop12h 00mFrontier
Deal found 9/15$163
This CheapOair deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/23:43 pmONT - MSP
1 stop6h 13mFrontier
dom. 10/59:31 pmMSP - ONT
1 stop15h 57mFrontier
Deal found 9/14$168
This Mytrip deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/18:59 pmONT - MSP
1 stop24h 57mFrontier
mar. 10/710:00 amMSP - ONT
1 stop15h 50mFrontier
Deal found 9/16$170

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Wisconsin that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated septiembre 17, 2025.
Use the filters below to find and compare flights from Ontario to Wisconsin that are best for you.

Fly from

Ontario

Fly to

Wisconsin

Route

Depart

Return

Price

OntarioMinneapolis

ONT - MSP

ONTMSP

Ontario

vie. 11/7

4:05 pm-12:14 am

1 stop6h 09m

Minneapolis St Paul

dom. 11/9

10:15 am-11:10 am

1 stop26h 55m

$144

OntarioMinneapolis

ONT - MSP

ONTMSP

Ontario

jue. 10/23

6:53 am-9:05 am

1 stop24h 12m

Minneapolis St Paul

mié. 10/29

7:50 am-11:50 pm

1 stop18h 00m

$144

OntarioMinneapolis

ONT - MSP

ONTMSP

Ontario

vie. 10/3

8:59 pm-8:46 pm

1 stop21h 47m

Minneapolis St Paul

mar. 10/7

7:50 am-11:50 pm

1 stop18h 00m

$144

OntarioMinneapolis

ONT - MSP

ONTMSP

Ontario

jue. 10/16

6:53 am-11:53 pm

1 stop15h 00m

Minneapolis St Paul

jue. 10/23

6:00 am-9:35 am

1 stop5h 35m

$175

OntarioMinneapolis

ONT - MSP

ONTMSP

Ontario

mar. 9/30

8:59 pm-8:46 pm

1 stop21h 47m

Minneapolis St Paul

sáb. 10/4

8:00 am-7:54 pm

1 stop13h 54m

$195

OntarioMinneapolis

ONT - MSP

ONTMSP

Ontario

mié. 10/15

6:53 am-11:53 pm

1 stop15h 00m

Minneapolis St Paul

dom. 10/19

9:24 pm-7:47 am

1 stop12h 23m

$228

OntarioMinneapolis

ONT - MSP

ONTMSP

Ontario

jue. 10/16

4:17 pm-8:54 pm

1 stop26h 37m

Minneapolis St Paul

sáb. 10/18

6:21 pm-9:35 am

2 stops17h 14m

$240

OntarioChicago

ONT - ORD

ONTORD

Ontario

mié. 10/29

11:48 am-11:50 pm

1 stop10h 02m

Chicago O'Hare Intl

sáb. 11/1

2:20 pm-10:41 pm

1 stop10h 21m

$277

OntarioMilwaukee

ONT - MKE

ONTMKE

Ontario

vie. 11/14

6:53 am-7:19 pm

1 stop10h 26m

Milwaukee-Mitchell

dom. 11/16

7:29 pm-11:10 am

2 stops17h 41m

$277

OntarioMinneapolis

ONT - MSP

ONTMSP

Ontario

mar. 10/7

5:45 pm-12:21 pm

1 stop16h 36m

Minneapolis St Paul

jue. 10/9

1:17 pm-11:51 pm

1 stop12h 34m

$290

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/17

Showing 1-10 of 60 results
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Best time to book a flight from Ontario to Wisconsin

Have a flexible travel schedule? Discover the best time to fly to Wisconsin from Ontario with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Ontario to Wisconsin

What is the cheapest month to book a flight from Ontario to Wisconsin?

Currently, February is the cheapest month in which you can book a flight from Ontario to Wisconsin (average of $280). Flying from Ontario to Wisconsin in June is currently the most expensive (average of $376). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from ONT to WI?

Find hourly flight availability from Ontario to Wisconsin. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated septiembre 17, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Ontario to Wisconsin as you normally would.

Reviews of airlines servicing Wisconsin

Get insights into the airlines that provide service to Wisconsin. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Wisconsin. Reviews last updated septiembre 17, 2025.
Read reviews from past customers who have flown Southwest, Delta, and United Airlines from Ontario to Wisconsin. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Crew

8.6

Food

7.0

Overall

8.0

Entertainment

7.5

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Southwest
8.0
Very good
4,242 reviews
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Crew

8.6

Food

7.0

Overall

8.0

Entertainment

7.5

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Delta
8.0
Very good
7,961 reviews
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Crew

8.6

Food

7.0

Overall

8.0

Entertainment

7.5

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
United Airlines
7.4
Good
8,926 reviews
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Crew

8.6

Food

7.0

Overall

8.0

Entertainment

7.5

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Crew

8.6

Food

7.0

Overall

8.0

Entertainment

7.5

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Wisconsin. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Ontario to Wisconsin?

    Ontario (ONT), located 3.1 mi from the city center, is the airport you fly out of when you book flights from Ontario to Wisconsin.

  • How long is the flight from Ontario to Wisconsin?

    Frontier and Delta can get you from Ontario to Wisconsin in just under 6h 09m. Your travel time can differ by up to 3h 53m. Airlines will cover a distance of 1491 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Ontario to Wisconsin one-way?

    $135 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on Hawaiian Airlines and Delta, with prices starting from $145 and $146, respectively.

  • What are the most popular routes from Ontario to Wisconsin?

    The most popular flight routes from Ontario to Wisconsin are Ontario - Chicago O'Hare Intl, Ontario - Minneapolis St Paul and Ontario - Milwaukee-Mitchell.

  • Can I find deals for flights from Ontario to Wisconsin that include hotel bookings?

    Yes. In addition to deals on Ontario to Wisconsin flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Wisconsin?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Wisconsin.

  • Can I find deals for business class flights from Ontario to Wisconsin?

    Yes. Cheapflights offers flight deals from Ontario to Wisconsin by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Ontario to Wisconsin?

    Currently, February is the cheapest month in which you can book a flight from Ontario to Wisconsin (average of $280). Flying from Ontario to Wisconsin in June is currently the most expensive (average of $376). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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Alternative routes for Ontario to Wisconsin

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Top 4 airlines flying from Ontario to Wisconsin

Discover the top 4 airlines that operate flights from Ontario to Wisconsin. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated septiembre 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$253Average$427FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$276Average$563FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$288Average$532FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$326Average$417FlexibilityNo cancel feeOn-time63%

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